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gen_namespace.go
66 lines (54 loc) · 1.49 KB
/
gen_namespace.go
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package definitions
import (
"github.com/Xuanwo/gg"
"github.com/Xuanwo/templateutils"
log "github.com/sirupsen/logrus"
)
type genNamespace struct {
g *gg.Generator
}
func GenerateNamespace(path string) {
gf := &genNamespace{
g: gg.New(),
}
f := gf.g.NewGroup()
f.AddLineComment("Code generated by go generate cmd/definitions; DO NOT EDIT.")
f.AddPackage("definitions")
f.NewImport().
AddPath("fmt").
AddLine().
AddPath("github.com/fastone-open/go-storage/types")
gf.generateNamespace(NamespaceService, OperationsService)
gf.generateNamespace(NamespaceStorage, OperationsStorage)
err := gf.g.WriteFile(path)
if err != nil {
log.Fatalf("generate to %s: %v", path, err)
}
}
func (gf *genNamespace) generateNamespace(nsName string, ops []Operation) {
f := gf.g.NewGroup()
nsNameP := templateutils.ToPascal(nsName)
structName := nsNameP
sf := f.NewStruct(structName)
sf.AddLine()
sf.AddField("Features", "types."+nsNameP+"Features")
sf.AddLine()
for _, op := range ops {
sf.AddField(templateutils.ToPascal(op.Name), "[]Pair")
}
f.NewFunction("ListPairs").
WithReceiver("s", structName).
AddParameter("name", "string").
AddResult("", "[]Pair").
AddBody(gg.Embed(func() gg.Node {
g := gg.NewGroup()
s := g.NewSwitch("name")
for _, op := range ops {
s.NewCase(gg.Lit(op.Name)).
AddBody(gg.Return(
gg.S("SortPairs(s.%s)", templateutils.ToPascal(op.Name))))
}
s.NewDefault().AddBody(`panic(fmt.Errorf("invalid op: %s", name))`)
return g
}))
}